CN202632147U - Voltage stabilizer for stabilizing voltage in electronic label - Google Patents
Voltage stabilizer for stabilizing voltage in electronic label Download PDFInfo
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- CN202632147U CN202632147U CN 201220316349 CN201220316349U CN202632147U CN 202632147 U CN202632147 U CN 202632147U CN 201220316349 CN201220316349 CN 201220316349 CN 201220316349 U CN201220316349 U CN 201220316349U CN 202632147 U CN202632147 U CN 202632147U
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Abstract
The utility model discloses a voltage stabilizer for stabilizing a voltage in an electronic label. The voltage stabilizer comprises a first MOS (Metal Oxide Semiconductor) transistor, a first amplifier, a first resistor, a second resistor, a third resistor, a second capacitor, a voltage signal input wire and a voltage signal output wire, wherein two ends of the second capacitor are respectively connected with the output end of the first amplifier and the first resistor; the grid electrode of the first MOS transistor is connected with a line between the output end of the first amplifier and the second capacitor; the other end, relatively connected with the second capacitor end, of the first resistor is connected with the source electrode of the first MOS transistor; two ends of the second resistor are respectively connected with the drain electrode of the first MOS transistor and the third resistor; the other end, relatively connected with the second resistor end, of the third resistor is grounded; and the in-phase input end of the first amplifier is connected with the line between the second resistor and the third resistor. According to the voltage stabilizer for stabilizing the voltage in the electronic label, the input voltage is fed back and then output, so that the sensitivity of the input voltage and the output voltage is reduced, and as a result, the stability of the voltage input into a circuit in the electronic label is ensured.
Description
Technical field
The utility model relates to the radio-frequency technique field, specifically is the voltage stabilizer that is used for the electronic tag burning voltage.
Background technology
RF identification is current application one of the most non-contact automatic target identification technology, and therefore advantages such as it has noncontact, read-write is flexible, speed is fast, security height are widely used in every field.Radio-frequency recognition system mainly comprises reader and electronic tag, and what the coupling of reader transmit receive antenna was come is AC signal, before obtaining internal electric source, must carry out rectification to it, is about to AC signal and converts direct current signal into.The DC voltage amplitude jitter that rectification goes out in the existing electronic tag is bigger, can not guarantee the stable of signal when DC voltage is applied to the electronic tag internal circuit, thereby can influence the stability when carrying out the signal transmission between electronic tag and the reader.
The utility model content
The purpose of the utility model is to overcome the deficiency of prior art, and providing a kind of can carry out voltage stabilizing to the voltage after the rectification, thereby improves the voltage stabilizer that is used for the electronic tag burning voltage that is input to voltage stability in the electronic tag internal circuit.
The purpose of the utility model mainly realizes through following technical scheme: the voltage stabilizer that is used for the electronic tag burning voltage; Comprise first MOS transistor, first amplifier, first resistance, second resistance, the 3rd resistance and second electric capacity; The two ends of said second electric capacity are connected with first resistance with the output terminal of first amplifier respectively; The grid of said first MOS transistor is connected with the output terminal of first amplifier and the circuit between second electric capacity; The other end that first resistance connects second capacitance terminal relatively is connected with the first MOS transistor source electrode; The said second resistance two ends are connected with the 3rd resistance with first MOS transistor drain electrode respectively, the other end ground connection of the relative connection of the 3rd resistance second resistance terminal, and the in-phase input end of said first amplifier is connected with circuit between second resistance and the 3rd resistance; Be connected with the voltage signal incoming line on the circuit between the said first MOS transistor source electrode and first resistance, be connected with the voltage signal output line on the circuit between said first MOS transistor drain electrode and second resistance.Wherein, the voltage signal incoming line receives the voltage after the rectification, and the voltage of voltage signal output line after with voltage stabilizing exports in the internal circuit of electronic tag.
The voltage stabilizer that is used for the electronic tag burning voltage also comprises first electric capacity and the 4th resistance, and said first electric capacity, one end is connected on the voltage signal incoming line its other end ground connection; Said the 4th resistance one end is connected on the voltage signal output line its other end ground connection.The utility model carries out preliminary filtering through first electric capacity to the voltage in input the utility model, and the 4th resistance then is used to carry out load protection.
Said first MOS transistor is the P-channel enhancement type FET.
Compared with prior art; The utlity model has following beneficial effect: the utility model comprises first MOS transistor, first amplifier, first resistance, second resistance, the 3rd resistance and second electric capacity; Wherein, the voltage signal incoming line is connected on the circuit between the first MOS transistor source electrode and first resistance, and the voltage signal output line is connected on the circuit between the drain electrode of first MOS transistor and second resistance; First resistance, second resistance, second electric capacity, first amplifier and first MOS transistor constitute a negative feedback in the utility model; Voltage is exported after this negative feedback voltage stabilizing, has reduced the susceptibility between output voltage and the input voltage, thereby can reach the requirement of exporting after the voltage stabilizing; This has just guaranteed the stability that signal transmits between electronic tag and the reader, helps applying of radio-frequency recognition system.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The pairing name of Reference numeral is called in the accompanying drawing: P1-first MOS transistor, A1-first amplifier, R1-first resistance, R2-second resistance; R3-the 3rd resistance, R4-the 3rd resistance, C1-first electric capacity; C2-second electric capacity, 1-voltage signal incoming line, 2-voltage signal output line.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is done further to specify, but the embodiment of the utility model is not limited thereto.
Embodiment:
As shown in Figure 1; The voltage stabilizer that is used for the electronic tag burning voltage; Comprise the first MOS transistor P1, the first amplifier A1, first resistance R 1, second resistance R 2, the 3rd resistance R 3 and second capacitor C 2; Wherein, the first MOS transistor P1 preferably adopts the P-channel enhancement type FET, and the first amplifier A1 preferably adopts LM324.The two ends of second capacitor C 2 are connected with first resistance R 1 with the output terminal of the first amplifier A1 respectively; The grid of the first MOS transistor P1 is connected with the output terminal of the first amplifier A1 and the circuit between second capacitor C 2, and the other end that first resistance R 1 connects second capacitor C, 2 ends relatively is connected with the first MOS transistor P1 source electrode.Second resistance R, 2 two ends are connected with the 3rd resistance R 3 with first MOS transistor P1 drain electrode respectively; The 3rd resistance R 3 connects the other end ground connection of second resistance R, 2 ends relatively; The in-phase input end of the first amplifier A1 is connected with circuit between second resistance R 2 and the 3rd resistance R 3; For the ease of reference voltage is tested, the inverting input of the first amplifier A1 is unsettled.Be connected with voltage signal incoming line 1 on the circuit between the first MOS transistor P1 source electrode and first resistance R 1; Be connected with voltage signal output line 2 on the circuit between the first MOS transistor P1 drain electrode and second resistance R 2; Wherein, Voltage signal incoming line 1 receives the voltage after the rectification, and voltage signal output line 2 is input to the voltage after the voltage stabilizing in the internal circuit of electronic tag.
The voltage stabilizer that is used for the electronic tag burning voltage; Also comprise first capacitor C 1 and the 4th resistance R 4; Wherein, first capacitor C, 1 one ends are connected on the voltage signal incoming line 1, and first capacitor C 1 connects the other end ground connection of voltage signal incoming line 1 end relatively; The 4th resistance R 4 one ends are connected on the voltage signal output line 2, and the 4th resistance R 4 connects the other end ground connection of voltage signal output line 2 ends relatively.
As stated, then can well realize the utility model.
Claims (3)
1. the voltage stabilizer that is used for the electronic tag burning voltage; It is characterized in that: comprise first MOS transistor (P1), first amplifier (A1), first resistance (R1), second resistance (R2), the 3rd resistance (R3) and second electric capacity (C2); The two ends of said second electric capacity (C2) are connected with first resistance (R1) with the output terminal of first amplifier (A1) respectively; The grid of said first MOS transistor (P1) is connected with the output terminal of first amplifier (A1) and the circuit between second electric capacity (C2); The other end that first resistance (R1) connects second electric capacity (C2) end relatively is connected with first MOS transistor (P1) source electrode; Said second resistance (R2) two ends are connected with the 3rd resistance (R3) with first MOS transistor (P1) drain electrode respectively; The 3rd resistance (R3) connects the other end ground connection of second resistance (R2) end relatively, and the in-phase input end of said first amplifier (A1) is connected with circuit between second resistance (R2) and the 3rd resistance (R3); Be connected with voltage signal incoming line (1) on the circuit between said first MOS transistor (P1) source electrode and first resistance (R1), be connected with voltage signal output line (2) on the circuit between said first MOS transistor (P1) drain electrode and second resistance (R2).
2. the voltage stabilizer that is used for the electronic tag burning voltage according to claim 1; It is characterized in that: also comprise first electric capacity (C1) and the 4th resistance (R4); Said first electric capacity (C1) end is connected on the voltage signal incoming line (1), its other end ground connection; Said the 4th resistance (R4) end is connected on the voltage signal output line (2), its other end ground connection.
3. the voltage stabilizer that is used for the electronic tag burning voltage according to claim 1 and 2 is characterized in that: said first MOS transistor (P1) is the P-channel enhancement type FET.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220316349 CN202632147U (en) | 2012-07-03 | 2012-07-03 | Voltage stabilizer for stabilizing voltage in electronic label |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220316349 CN202632147U (en) | 2012-07-03 | 2012-07-03 | Voltage stabilizer for stabilizing voltage in electronic label |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202632147U true CN202632147U (en) | 2012-12-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220316349 Expired - Fee Related CN202632147U (en) | 2012-07-03 | 2012-07-03 | Voltage stabilizer for stabilizing voltage in electronic label |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202632147U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103036538A (en) * | 2012-12-06 | 2013-04-10 | 国民技术股份有限公司 | Circuit and method for correcting offset voltage of comparator |
| CN103529887A (en) * | 2012-07-03 | 2014-01-22 | 成都市宏山科技有限公司 | Voltage stabilizer applied in electronic label for stabilizing voltage |
-
2012
- 2012-07-03 CN CN 201220316349 patent/CN202632147U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529887A (en) * | 2012-07-03 | 2014-01-22 | 成都市宏山科技有限公司 | Voltage stabilizer applied in electronic label for stabilizing voltage |
| CN103036538A (en) * | 2012-12-06 | 2013-04-10 | 国民技术股份有限公司 | Circuit and method for correcting offset voltage of comparator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20130703 |